Patients will be randomized into one of three groups. Patients in the first group (D1) will receive standardized oral analgesic regime pre-operatively, intraoperatively and postoperatively. In addition to the above, they will be given preoperative intravenous 8mg dexamethasone. Patients in the second (D2) group will be given preoperative intravenous 16mg dexamethasone, in addition to same pre-operative, intraoperative and post-operative analgesic regimes. Patients in the third (C) group will be given preoperative intravenous 4ml 0.9% saline, in addition to same pre-operative, intraoperative and post-operative analgesic regimes.